Research Methods Confounding Variables Exercise Answer the same four questions f

Question

Research Methods Confounding Variables Exercise Answer the same four questions for each of the experiments described below. Hint: One of the selections contain no confounds. Confound selection 1 Tom Rogers wanted to test a new "singalong" method to teach math to fourth graders (e.g., "I love to multiply" to the tune of"God Bless America"). He used the singalong method in his first period class. His sixth period students continued solving math problems with the old method. At the end of the term, Mr. Rogers found that the first period class scored significantly lower than the sixth period class on a mathematics achievement test. He concluded that the singalong method was a total failure 1. Identify the independent variable(s). 2. Identify the dependent variable(s). 3. Identify any confounding variable(s). 4. Propose a method to "unconfound" the experiment.

Explanation / Answer

1. The independent variable is; use of songs while teaching.

2. The dependent variable is the performance of students.

3. The confounding variables can be the environment of the class and the social issues in the family of the students in the class.

4. Use of random method in the selection of the subjects of the experiment can confound the experiment.

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